DATABASE DESIGN USING NORMALIZATION QUIZ

When you are given a set of tables and asked to create a database to store their data, the first step is to create the new database.

True

False

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One common design problem when designing a database from existing data is the presence of inconsistent values in the received data.

True

False

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One common design problem when designing a database from existing data is the use of a single cell in one column to store multiple values of an attribute.

False

True

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For a number of reasons, normalizations is not often an advantage for a(n) ________ database.

None of these

either a read-only or an updateable

read-only

updateable

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When assessing the table structure of an acquired set of tables with data, determining primary keys is (part of) the:

third step.

first step.

fourth step.

second step.

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Each answer below shows example data from a table. Which answer is an example of the general-purpose remarks column problem?

One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column.

Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row.

Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column.

Three rows have the values Brown, NULL, and Blue in the same column.

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When building a database from an existing set of tables, we may safely assume that referential integrity constraints have been enforced on the data we are given.

False

True

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Normalization ________ data duplication.

maximizes

increases

eliminates

reduces

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We use the SQL construct COLUMNS(*) to determine the number and type of columns in a table.

True

False

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Needing to using more complicated SQL in database applications is a(n) ________ of normalization.

advantage

disadvantage

either an advantage or disadvantage

neither an advantage nor disadvantage

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